PCM1809IRTER-Texas Instruments-Price, Stock & Datasheet

The PCM1809 is a low power audio analog-to-digital converter (ADC) that supports simultaneous sampling of up to two analog channels. The device supports single-ended and differential line and microphone inputs with a 2VRMS full-scale differential signal. The device integrates a phase-locked loop (PLL), a DC removal high-pass filter (HPF), and supports sample rates up to 192kHz. The device supports time-division multiplexing (TDM) or I2S audio formats, selectable with the hardware pin level. Additionally, the PCM1809 supports Controller and target mode selection for the audio bus interface operation. These integrated features, along with the ability to be powered from a single supply of 3.3V, make the device an excellent choice for cost-sensitive, space-constrained audio systems in microphone recording applications.

The PCM1809 is specified from –40°C to +105°C, and is offered in a 20-pin WQFN package.

Stereo low power ADC:
- 2-channel analog microphones or line-in
ADC line and microphone differential and single-ended input performance:
- PCM1809 dynamic range:
  - Differential Input: 104dB
  - Single-ended Input: 102dB
- THD+N: –95 dB
2-VRMS differential full-scale input
Direct Coupling
- Wide Input Common Mode support
- AC/DC Coupling support
ADC sample rate (fS) = 8 kHz to 192 kHz
Hardware pin control configurations
Linear-phase or low-latency filter selection
Flexible audio serial data interface:
- Controller or target interface selection
- 32-bits, 2-channel TDM
- 32-bits, 2-channel I2S
Automatic power-down upon loss of audio clocks
Integrated high-performance audio PLL
Single-supply operation: 3.3 V
I/O-supply operation: 3.3 V or 1.8 V
Power consumption for 3.3-V AVDD supply:
- 19.6 mW/channel at 16-kHz sample rate
- 21.3 mW/channel at 48-kHz sample rate